A man on the top of a vertical observation tower observes a car moving at a uniform speed coming directly towards it If

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Q 3020778611.     A man on the top of a vertical observation tower observes a car moving at a uniform speed coming directly towards it If it takes `12` minutes for the angle of depression to change from ` 30^{0}` to `45^{0}` how soon after this will the car reach the observation tower?
A

14 min. 35 sec

B

15 min. 49 sec.

C

16 min. 23 sec.

D

18 min. 5 sec.

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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